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Diffstat (limited to 'bfd/archive.c')
| -rw-r--r-- | bfd/archive.c | 2127 |
1 files changed, 2127 insertions, 0 deletions
diff --git a/bfd/archive.c b/bfd/archive.c new file mode 100644 index 00000000000..8ac5aa4e95d --- /dev/null +++ b/bfd/archive.c @@ -0,0 +1,2127 @@ +/* BFD back-end for archive files (libraries). + Copyright 1990, 91, 92, 93, 94, 95, 96, 97, 1998 + Free Software Foundation, Inc. + Written by Cygnus Support. Mostly Gumby Henkel-Wallace's fault. + +This file is part of BFD, the Binary File Descriptor library. + +This program is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2 of the License, or +(at your option) any later version. + +This program is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with this program; if not, write to the Free Software +Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + +/* +@setfilename archive-info +SECTION + Archives + +DESCRIPTION + An archive (or library) is just another BFD. It has a symbol + table, although there's not much a user program will do with it. + + The big difference between an archive BFD and an ordinary BFD + is that the archive doesn't have sections. Instead it has a + chain of BFDs that are considered its contents. These BFDs can + be manipulated like any other. The BFDs contained in an + archive opened for reading will all be opened for reading. You + may put either input or output BFDs into an archive opened for + output; they will be handled correctly when the archive is closed. + + Use <<bfd_openr_next_archived_file>> to step through + the contents of an archive opened for input. You don't + have to read the entire archive if you don't want + to! Read it until you find what you want. + + Archive contents of output BFDs are chained through the + <<next>> pointer in a BFD. The first one is findable through + the <<archive_head>> slot of the archive. Set it with + <<bfd_set_archive_head>> (q.v.). A given BFD may be in only one + open output archive at a time. + + As expected, the BFD archive code is more general than the + archive code of any given environment. BFD archives may + contain files of different formats (e.g., a.out and coff) and + even different architectures. You may even place archives + recursively into archives! + + This can cause unexpected confusion, since some archive + formats are more expressive than others. For instance, Intel + COFF archives can preserve long filenames; SunOS a.out archives + cannot. If you move a file from the first to the second + format and back again, the filename may be truncated. + Likewise, different a.out environments have different + conventions as to how they truncate filenames, whether they + preserve directory names in filenames, etc. When + interoperating with native tools, be sure your files are + homogeneous. + + Beware: most of these formats do not react well to the + presence of spaces in filenames. We do the best we can, but + can't always handle this case due to restrictions in the format of + archives. Many Unix utilities are braindead in regards to + spaces and such in filenames anyway, so this shouldn't be much + of a restriction. + + Archives are supported in BFD in <<archive.c>>. + +*/ + +/* Assumes: + o - all archive elements start on an even boundary, newline padded; + o - all arch headers are char *; + o - all arch headers are the same size (across architectures). +*/ + +/* Some formats provide a way to cram a long filename into the short + (16 chars) space provided by a BSD archive. The trick is: make a + special "file" in the front of the archive, sort of like the SYMDEF + entry. If the filename is too long to fit, put it in the extended + name table, and use its index as the filename. To prevent + confusion prepend the index with a space. This means you can't + have filenames that start with a space, but then again, many Unix + utilities can't handle that anyway. + + This scheme unfortunately requires that you stand on your head in + order to write an archive since you need to put a magic file at the + front, and need to touch every entry to do so. C'est la vie. + + We support two variants of this idea: + The SVR4 format (extended name table is named "//"), + and an extended pseudo-BSD variant (extended name table is named + "ARFILENAMES/"). The origin of the latter format is uncertain. + + BSD 4.4 uses a third scheme: It writes a long filename + directly after the header. This allows 'ar q' to work. + We currently can read BSD 4.4 archives, but not write them. +*/ + +/* Summary of archive member names: + + Symbol table (must be first): + "__.SYMDEF " - Symbol table, Berkeley style, produced by ranlib. + "/ " - Symbol table, system 5 style. + + Long name table (must be before regular file members): + "// " - Long name table, System 5 R4 style. + "ARFILENAMES/ " - Long name table, non-standard extended BSD (not BSD 4.4). + + Regular file members with short names: + "filename.o/ " - Regular file, System 5 style (embedded spaces ok). + "filename.o " - Regular file, Berkeley style (no embedded spaces). + + Regular files with long names (or embedded spaces, for BSD variants): + "/18 " - SVR4 style, name at offset 18 in name table. + "#1/23 " - Long name (or embedded paces) 23 characters long, + BSD 4.4 style, full name follows header. + Implemented for reading, not writing. + " 18 " - Long name 18 characters long, extended pseudo-BSD. + */ + +#include "bfd.h" +#include "sysdep.h" +#include "libbfd.h" +#include "aout/ar.h" +#include "aout/ranlib.h" +#include <ctype.h> + +#ifndef errno +extern int errno; +#endif + +#ifdef GNU960 +#define BFD_GNU960_ARMAG(abfd) (BFD_COFF_FILE_P((abfd)) ? ARMAG : ARMAGB) +#endif + +/* Define offsetof for those systems which lack it */ + +#ifndef offsetof +#define offsetof(TYPE, MEMBER) ((unsigned long) &((TYPE *)0)->MEMBER) +#endif + +/* We keep a cache of archive filepointers to archive elements to + speed up searching the archive by filepos. We only add an entry to + the cache when we actually read one. We also don't sort the cache; + it's generally short enough to search linearly. + Note that the pointers here point to the front of the ar_hdr, not + to the front of the contents! +*/ +struct ar_cache +{ + file_ptr ptr; + bfd *arelt; + struct ar_cache *next; +}; + +#define ar_padchar(abfd) ((abfd)->xvec->ar_pad_char) +#define ar_maxnamelen(abfd) ((abfd)->xvec->ar_max_namelen) + +#define arch_eltdata(bfd) ((struct areltdata *)((bfd)->arelt_data)) +#define arch_hdr(bfd) ((struct ar_hdr *)arch_eltdata(bfd)->arch_header) + +static char *get_extended_arelt_filename PARAMS ((bfd *arch, + const char *name)); +static boolean do_slurp_bsd_armap PARAMS ((bfd *abfd)); +static boolean do_slurp_coff_armap PARAMS ((bfd *abfd)); +static const char *normalize PARAMS ((bfd *, const char *file)); +static struct areltdata *bfd_ar_hdr_from_filesystem PARAMS ((bfd *abfd, + const char *, + bfd *member)); + +boolean +_bfd_generic_mkarchive (abfd) + bfd *abfd; +{ + abfd->tdata.aout_ar_data = ((struct artdata *) + bfd_zalloc (abfd, sizeof (struct artdata))); + + if (bfd_ardata (abfd) == NULL) + return false; + + bfd_ardata (abfd)->cache = NULL; + bfd_ardata (abfd)->archive_head = NULL; + bfd_ardata (abfd)->symdefs = NULL; + bfd_ardata (abfd)->extended_names = NULL; + bfd_ardata (abfd)->tdata = NULL; + + return true; +} + +/* +FUNCTION + bfd_get_next_mapent + +SYNOPSIS + symindex bfd_get_next_mapent(bfd *abfd, symindex previous, carsym **sym); + +DESCRIPTION + Step through archive @var{abfd}'s symbol table (if it + has one). Successively update @var{sym} with the next symbol's + information, returning that symbol's (internal) index into the + symbol table. + + Supply <<BFD_NO_MORE_SYMBOLS>> as the @var{previous} entry to get + the first one; returns <<BFD_NO_MORE_SYMBOLS>> when you've already + got the last one. + + A <<carsym>> is a canonical archive symbol. The only + user-visible element is its name, a null-terminated string. +*/ + +symindex +bfd_get_next_mapent (abfd, prev, entry) + bfd *abfd; + symindex prev; + carsym **entry; +{ + if (!bfd_has_map (abfd)) + { + bfd_set_error (bfd_error_invalid_operation); + return BFD_NO_MORE_SYMBOLS; + } + + if (prev == BFD_NO_MORE_SYMBOLS) + prev = 0; + else + ++prev; + if (prev >= bfd_ardata (abfd)->symdef_count) + return BFD_NO_MORE_SYMBOLS; + + *entry = (bfd_ardata (abfd)->symdefs + prev); + return prev; +} + +/* To be called by backends only */ + +bfd * +_bfd_create_empty_archive_element_shell (obfd) + bfd *obfd; +{ + return _bfd_new_bfd_contained_in (obfd); +} + +/* +FUNCTION + bfd_set_archive_head + +SYNOPSIS + boolean bfd_set_archive_head(bfd *output, bfd *new_head); + +DESCRIPTION + Set the head of the chain of + BFDs contained in the archive @var{output} to @var{new_head}. +*/ + +boolean +bfd_set_archive_head (output_archive, new_head) + bfd *output_archive; + bfd *new_head; +{ + + output_archive->archive_head = new_head; + return true; +} + +bfd * +_bfd_look_for_bfd_in_cache (arch_bfd, filepos) + bfd *arch_bfd; + file_ptr filepos; +{ + struct ar_cache *current; + + for (current = bfd_ardata (arch_bfd)->cache; current != NULL; + current = current->next) + if (current->ptr == filepos) + return current->arelt; + + return NULL; +} + +/* Kind of stupid to call cons for each one, but we don't do too many */ +boolean +_bfd_add_bfd_to_archive_cache (arch_bfd, filepos, new_elt) + bfd *arch_bfd, *new_elt; + file_ptr filepos; +{ + struct ar_cache *new_cache = ((struct ar_cache *) + bfd_zalloc (arch_bfd, + sizeof (struct ar_cache))); + + if (new_cache == NULL) + return false; + + new_cache->ptr = filepos; + new_cache->arelt = new_elt; + new_cache->next = (struct ar_cache *) NULL; + if (bfd_ardata (arch_bfd)->cache == NULL) + bfd_ardata (arch_bfd)->cache = new_cache; + else + { + struct ar_cache *current = bfd_ardata (arch_bfd)->cache; + + while (current->next != NULL) + current = current->next; + current->next = new_cache; + } + + return true; +} + +/* The name begins with space. Hence the rest of the name is an index into + the string table. */ + +static char * +get_extended_arelt_filename (arch, name) + bfd *arch; + const char *name; +{ + unsigned long index = 0; + + /* Should extract string so that I can guarantee not to overflow into + the next region, but I'm too lazy. */ + errno = 0; + /* Skip first char, which is '/' in SVR4 or ' ' in some other variants. */ + index = strtol (name + 1, NULL, 10); + if (errno != 0) + { + bfd_set_error (bfd_error_malformed_archive); + return NULL; + } + + return bfd_ardata (arch)->extended_names + index; +} + +/* This functions reads an arch header and returns an areltdata pointer, or + NULL on error. + + Presumes the file pointer is already in the right place (ie pointing + to the ar_hdr in the file). Moves the file pointer; on success it + should be pointing to the front of the file contents; on failure it + could have been moved arbitrarily. +*/ + +PTR +_bfd_generic_read_ar_hdr (abfd) + bfd *abfd; +{ + return _bfd_generic_read_ar_hdr_mag (abfd, (const char *) NULL); +} + +/* Alpha ECOFF uses an optional different ARFMAG value, so we have a + variant of _bfd_generic_read_ar_hdr which accepts a magic string. */ + +PTR +_bfd_generic_read_ar_hdr_mag (abfd, mag) + bfd *abfd; + const char *mag; +{ + struct ar_hdr hdr; + char *hdrp = (char *) &hdr; + unsigned int parsed_size; + struct areltdata *ared; + char *filename = NULL; + unsigned int namelen = 0; + unsigned int allocsize = sizeof (struct areltdata) + sizeof (struct ar_hdr); + char *allocptr = 0; + + if (bfd_read ((PTR) hdrp, 1, sizeof (struct ar_hdr), abfd) + != sizeof (struct ar_hdr)) + { + if (bfd_get_error () != bfd_error_system_call) + bfd_set_error (bfd_error_no_more_archived_files); + return NULL; + } + if (strncmp (hdr.ar_fmag, ARFMAG, 2) != 0 + && (mag == NULL + || strncmp (hdr.ar_fmag, mag, 2) != 0)) + { + bfd_set_error (bfd_error_malformed_archive); + return NULL; + } + + errno = 0; + parsed_size = strtol (hdr.ar_size, NULL, 10); + if (errno != 0) + { + bfd_set_error (bfd_error_malformed_archive); + return NULL; + } + + /* Extract the filename from the archive - there are two ways to + specify an extended name table, either the first char of the + name is a space, or it's a slash. */ + if ((hdr.ar_name[0] == '/' + || (hdr.ar_name[0] == ' ' + && memchr (hdr.ar_name, '/', ar_maxnamelen (abfd)) == NULL)) + && bfd_ardata (abfd)->extended_names != NULL) + { + filename = get_extended_arelt_filename (abfd, hdr.ar_name); + if (filename == NULL) + { + bfd_set_error (bfd_error_malformed_archive); + return NULL; + } + } + /* BSD4.4-style long filename. + Only implemented for reading, so far! */ + else if (hdr.ar_name[0] == '#' + && hdr.ar_name[1] == '1' + && hdr.ar_name[2] == '/' + && isdigit ((unsigned char) hdr.ar_name[3])) + { + /* BSD-4.4 extended name */ + namelen = atoi (&hdr.ar_name[3]); + allocsize += namelen + 1; + parsed_size -= namelen; + + allocptr = bfd_zalloc (abfd, allocsize); + if (allocptr == NULL) + return NULL; + filename = (allocptr + + sizeof (struct areltdata) + + sizeof (struct ar_hdr)); + if (bfd_read (filename, 1, namelen, abfd) != namelen) + { + if (bfd_get_error () != bfd_error_system_call) + bfd_set_error (bfd_error_no_more_archived_files); + return NULL; + } + filename[namelen] = '\0'; + } + else + { + /* We judge the end of the name by looking for '/' or ' '. + Note: The SYSV format (terminated by '/') allows embedded + spaces, so only look for ' ' if we don't find '/'. */ + + char *e; + e = memchr (hdr.ar_name, '\0', ar_maxnamelen (abfd)); + if (e == NULL) + { + e = memchr (hdr.ar_name, '/', ar_maxnamelen (abfd)); + if (e == NULL) + e = memchr (hdr.ar_name, ' ', ar_maxnamelen (abfd)); + } + + if (e != NULL) + namelen = e - hdr.ar_name; + else + { + /* If we didn't find a termination character, then the name + must be the entire field. */ + namelen = ar_maxnamelen (abfd); + } + + allocsize += namelen + 1; + } + + if (!allocptr) + { + allocptr = bfd_zalloc (abfd, allocsize); + if (allocptr == NULL) + return NULL; + } + + ared = (struct areltdata *) allocptr; + + ared->arch_header = allocptr + sizeof (struct areltdata); + memcpy ((char *) ared->arch_header, (char *) &hdr, sizeof (struct ar_hdr)); + ared->parsed_size = parsed_size; + + if (filename != NULL) + ared->filename = filename; + else + { + ared->filename = allocptr + (sizeof (struct areltdata) + + sizeof (struct ar_hdr)); + if (namelen) + memcpy (ared->filename, hdr.ar_name, namelen); + ared->filename[namelen] = '\0'; + } + + return (PTR) ared; +} + +/* This is an internal function; it's mainly used when indexing + through the archive symbol table, but also used to get the next + element, since it handles the bookkeeping so nicely for us. */ + +bfd * +_bfd_get_elt_at_filepos (archive, filepos) + bfd *archive; + file_ptr filepos; +{ + struct areltdata *new_areldata; + bfd *n_nfd; + + n_nfd = _bfd_look_for_bfd_in_cache (archive, filepos); + if (n_nfd) + return n_nfd; + + if (0 > bfd_seek (archive, filepos, SEEK_SET)) + return NULL; + + if ((new_areldata = (struct areltdata *) _bfd_read_ar_hdr (archive)) == NULL) + return NULL; + + n_nfd = _bfd_create_empty_archive_element_shell (archive); + if (n_nfd == NULL) + { + bfd_release (archive, (PTR) new_areldata); + return NULL; + } + + n_nfd->origin = bfd_tell (archive); + n_nfd->arelt_data = (PTR) new_areldata; + n_nfd->filename = new_areldata->filename; + + if (_bfd_add_bfd_to_archive_cache (archive, filepos, n_nfd)) + return n_nfd; + + /* huh? */ + bfd_release (archive, (PTR) n_nfd); + bfd_release (archive, (PTR) new_areldata); + return NULL; +} + +/* Return the BFD which is referenced by the symbol in ABFD indexed by + INDEX. INDEX should have been returned by bfd_get_next_mapent. */ + +bfd * +_bfd_generic_get_elt_at_index (abfd, index) + bfd *abfd; + symindex index; +{ + carsym *entry; + + entry = bfd_ardata (abfd)->symdefs + index; + return _bfd_get_elt_at_filepos (abfd, entry->file_offset); +} + +/* +FUNCTION + bfd_openr_next_archived_file + +SYNOPSIS + bfd *bfd_openr_next_archived_file(bfd *archive, bfd *previous); + +DESCRIPTION + Provided a BFD, @var{archive}, containing an archive and NULL, open + an input BFD on the first contained element and returns that. + Subsequent calls should pass + the archive and the previous return value to return a created + BFD to the next contained element. NULL is returned when there + are no more. + +*/ + +bfd * +bfd_openr_next_archived_file (archive, last_file) + bfd *archive; + bfd *last_file; +{ + if ((bfd_get_format (archive) != bfd_archive) || + (archive->direction == write_direction)) + { + bfd_set_error (bfd_error_invalid_operation); + return NULL; + } + + return BFD_SEND (archive, + openr_next_archived_file, + (archive, + last_file)); +} + +bfd * +bfd_generic_openr_next_archived_file (archive, last_file) + bfd *archive; + bfd *last_file; +{ + file_ptr filestart; + + if (!last_file) + filestart = bfd_ardata (archive)->first_file_filepos; + else + { + unsigned int size = arelt_size (last_file); + /* Pad to an even boundary... + Note that last_file->origin can be odd in the case of + BSD-4.4-style element with a long odd size. */ + filestart = last_file->origin + size; + filestart += filestart % 2; + } + + return _bfd_get_elt_at_filepos (archive, filestart); +} + + +const bfd_target * +bfd_generic_archive_p (abfd) + bfd *abfd; +{ + struct artdata *tdata_hold; + char armag[SARMAG + 1]; + + tdata_hold = abfd->tdata.aout_ar_data; + + if (bfd_read ((PTR) armag, 1, SARMAG, abfd) != SARMAG) + { + if (bfd_get_error () != bfd_error_system_call) + bfd_set_error (bfd_error_wrong_format); + return NULL; + } + +#ifdef GNU960 + if (strncmp (armag, BFD_GNU960_ARMAG (abfd), SARMAG) != 0) + return 0; +#else + if (strncmp (armag, ARMAG, SARMAG) != 0 && + strncmp (armag, ARMAGB, SARMAG) != 0) + return 0; +#endif + + /* We are setting bfd_ardata(abfd) here, but since bfd_ardata + involves a cast, we can't do it as the left operand of assignment. */ + abfd->tdata.aout_ar_data = ((struct artdata *) + bfd_zalloc (abfd, sizeof (struct artdata))); + + if (bfd_ardata (abfd) == NULL) + return NULL; + + bfd_ardata (abfd)->first_file_filepos = SARMAG; + bfd_ardata (abfd)->cache = NULL; + bfd_ardata (abfd)->archive_head = NULL; + bfd_ardata (abfd)->symdefs = NULL; + bfd_ardata (abfd)->extended_names = NULL; + bfd_ardata (abfd)->tdata = NULL; + + if (!BFD_SEND (abfd, _bfd_slurp_armap, (abfd))) + { + bfd_release (abfd, bfd_ardata (abfd)); + abfd->tdata.aout_ar_data = tdata_hold; + if (bfd_get_error () != bfd_error_system_call) + bfd_set_error (bfd_error_wrong_format); + return NULL; + } + + if (!BFD_SEND (abfd, _bfd_slurp_extended_name_table, (abfd))) + { + bfd_release (abfd, bfd_ardata (abfd)); + abfd->tdata.aout_ar_data = tdata_hold; + if (bfd_get_error () != bfd_error_system_call) + bfd_set_error (bfd_error_wrong_format); + return NULL; + } + + if (bfd_has_map (abfd)) + { + bfd *first; + + /* This archive has a map, so we may presume that the contents + are object files. Make sure that if the first file in the + archive can be recognized as an object file, it is for this + target. If not, assume that this is the wrong format. If + the first file is not an object file, somebody is doing + something weird, and we permit it so that ar -t will work. + + This is done because any normal format will recognize any + normal archive, regardless of the format of the object files. + We do accept an empty archive. */ + + first = bfd_openr_next_archived_file (abfd, (bfd *) NULL); + if (first != NULL) + { + boolean fail; + + first->target_defaulted = false; + fail = false; + if (bfd_check_format (first, bfd_object) + && first->xvec != abfd->xvec) + { + (void) bfd_close (first); + bfd_release (abfd, bfd_ardata (abfd)); + abfd->tdata.aout_ar_data = tdata_hold; + bfd_set_error (bfd_error_wrong_format); + return NULL; + } + + /* We ought to close first here, but we can't, because we + have no way to remove it from the archive cache. FIXME. */ + } + } + + return abfd->xvec; +} + +/* Some constants for a 32 bit BSD archive structure. We do not + support 64 bit archives presently; so far as I know, none actually + exist. Supporting them would require changing these constants, and + changing some bfd_h_get_32 to bfd_h_get_64. */ + +/* The size of an external symdef structure. */ +#define BSD_SYMDEF_SIZE 8 + +/* The offset from the start of a symdef structure to the file offset. */ +#define BSD_SYMDEF_OFFSET_SIZE 4 + +/* The size of the symdef count. */ +#define BSD_SYMDEF_COUNT_SIZE 4 + +/* The size of the string count. */ +#define BSD_STRING_COUNT_SIZE 4 + +/* Returns false on error, true otherwise */ + +static boolean +do_slurp_bsd_armap (abfd) + bfd *abfd; +{ + struct areltdata *mapdata; + unsigned int counter; + bfd_byte *raw_armap, *rbase; + struct artdata *ardata = bfd_ardata (abfd); + char *stringbase; + unsigned int parsed_size; + carsym *set; + + mapdata = (struct areltdata *) _bfd_read_ar_hdr (abfd); + if (mapdata == NULL) + return false; + parsed_size = mapdata->parsed_size; + bfd_release (abfd, (PTR) mapdata); /* Don't need it any more. */ + + raw_armap = (bfd_byte *) bfd_zalloc (abfd, parsed_size); + if (raw_armap == (bfd_byte *) NULL) + return false; + + if (bfd_read ((PTR) raw_armap, 1, parsed_size, abfd) != parsed_size) + { + if (bfd_get_error () != bfd_error_system_call) + bfd_set_error (bfd_error_malformed_archive); + byebye: + bfd_release (abfd, (PTR) raw_armap); + return false; + } + + ardata->symdef_count = bfd_h_get_32 (abfd, raw_armap) / BSD_SYMDEF_SIZE; + + if (ardata->symdef_count * BSD_SYMDEF_SIZE > + parsed_size - BSD_SYMDEF_COUNT_SIZE) + { + /* Probably we're using the wrong byte ordering. */ + bfd_set_error (bfd_error_wrong_format); + goto byebye; + } + + ardata->cache = 0; + rbase = raw_armap + BSD_SYMDEF_COUNT_SIZE; + stringbase = ((char *) rbase + + ardata->symdef_count * BSD_SYMDEF_SIZE + + BSD_STRING_COUNT_SIZE); + ardata->symdefs = (carsym *) bfd_alloc (abfd, + (ardata->symdef_count + * sizeof (carsym))); + if (!ardata->symdefs) + return false; + + for (counter = 0, set = ardata->symdefs; + counter < ardata->symdef_count; + counter++, set++, rbase += BSD_SYMDEF_SIZE) + { + set->name = bfd_h_get_32 (abfd, rbase) + stringbase; + set->file_offset = bfd_h_get_32 (abfd, rbase + BSD_SYMDEF_OFFSET_SIZE); + } + + ardata->first_file_filepos = bfd_tell (abfd); + /* Pad to an even boundary if you have to */ + ardata->first_file_filepos += (ardata->first_file_filepos) % 2; + /* FIXME, we should provide some way to free raw_ardata when + we are done using the strings from it. For now, it seems + to be allocated on an objalloc anyway... */ + bfd_has_map (abfd) = true; + return true; +} + +/* Returns false on error, true otherwise */ +static boolean +do_slurp_coff_armap (abfd) + bfd *abfd; +{ + struct areltdata *mapdata; + int *raw_armap, *rawptr; + struct artdata *ardata = bfd_ardata (abfd); + char *stringbase; + unsigned int stringsize; + unsigned int parsed_size; + carsym *carsyms; + unsigned int nsymz; /* Number of symbols in armap. */ + bfd_vma (*swap) PARAMS ((const bfd_byte *)); + char int_buf[sizeof (long)]; + unsigned int carsym_size, ptrsize, i; + + mapdata = (struct areltdata *) _bfd_read_ar_hdr (abfd); + if (mapdata == NULL) + return false; + parsed_size = mapdata->parsed_size; + bfd_release (abfd, (PTR) mapdata); /* Don't need it any more. */ + + if (bfd_read ((PTR) int_buf, 1, 4, abfd) != 4) + { + if (bfd_get_error () != bfd_error_system_call) + bfd_set_error (bfd_error_malformed_archive); + return false; + } + /* It seems that all numeric information in a coff archive is always + in big endian format, nomatter the host or target. */ + swap = bfd_getb32; + nsymz = bfd_getb32 ((PTR) int_buf); + stringsize = parsed_size - (4 * nsymz) - 4; + +#if 1 + /* ... except that some archive formats are broken, and it may be our + fault - the i960 little endian coff sometimes has big and sometimes + little, because our tools changed. Here's a horrible hack to clean + up the crap. */ + + if (stringsize > 0xfffff + && bfd_get_arch (abfd) == bfd_arch_i960 + && bfd_get_flavour (abfd) == bfd_target_coff_flavour) + { + /* This looks dangerous, let's do it the other way around */ + nsymz = bfd_getl32 ((PTR) int_buf); + stringsize = parsed_size - (4 * nsymz) - 4; + swap = bfd_getl32; + } +#endif + + /* The coff armap must be read sequentially. So we construct a + bsd-style one in core all at once, for simplicity. */ + + carsym_size = (nsymz * sizeof (carsym)); + ptrsize = (4 * nsymz); + + ardata->symdefs = (carsym *) bfd_zalloc (abfd, carsym_size + stringsize + 1); + if (ardata->symdefs == NULL) + return false; + carsyms = ardata->symdefs; + stringbase = ((char *) ardata->symdefs) + carsym_size; + + /* Allocate and read in the raw offsets. */ + raw_armap = (int *) bfd_alloc (abfd, ptrsize); + if (raw_armap == NULL) + goto release_symdefs; + if (bfd_read ((PTR) raw_armap, 1, ptrsize, abfd) != ptrsize + || bfd_read ((PTR) stringbase, 1, stringsize, abfd) != stringsize) + { + if (bfd_get_error () != bfd_error_system_call) + bfd_set_error (bfd_error_malformed_archive); + goto release_raw_armap; + } + + /* OK, build the carsyms */ + for (i = 0; i < nsymz; i++) + { + rawptr = raw_armap + i; + carsyms->file_offset = swap ((PTR) rawptr); + carsyms->name = stringbase; + stringbase += strlen (stringbase) + 1; + carsyms++; + } + *stringbase = 0; + + ardata->symdef_count = nsymz; + ardata->first_file_filepos = bfd_tell (abfd); + /* Pad to an even boundary if you have to */ + ardata->first_file_filepos += (ardata->first_file_filepos) % 2; + + + bfd_has_map (abfd) = true; + bfd_release (abfd, (PTR) raw_armap); + + + /* Check for a second archive header (as used by PE) */ + { + struct areltdata *tmp; + + bfd_seek (abfd, ardata->first_file_filepos, SEEK_SET); + tmp = (struct areltdata *) _bfd_read_ar_hdr (abfd); + if (tmp != NULL) + { + if (tmp->arch_header[0] == '/' + && tmp->arch_header[1] == ' ') + { + ardata->first_file_filepos += + (tmp->parsed_size + sizeof(struct ar_hdr) + 1) & ~1; + } + bfd_release (abfd, tmp); + } + } + + return true; + +release_raw_armap: + bfd_release (abfd, (PTR) raw_armap); +release_symdefs: + bfd_release (abfd, (PTR) (ardata)->symdefs); + return false; +} + +/* This routine can handle either coff-style or bsd-style armaps. + Returns false on error, true otherwise */ + +boolean +bfd_slurp_armap (abfd) + bfd *abfd; +{ + char nextname[17]; + int i = bfd_read ((PTR) nextname, 1, 16, abfd); + + if (i == 0) + return true; + if (i != 16) + return false; + + if (bfd_seek (abfd, (file_ptr) - 16, SEEK_CUR) != 0) + return false; + + if (!strncmp (nextname, "__.SYMDEF ", 16) + || !strncmp (nextname, "__.SYMDEF/ ", 16)) /* old Linux archives */ + return do_slurp_bsd_armap (abfd); + else if (!strncmp (nextname, "/ ", 16)) + return do_slurp_coff_armap (abfd); + else if (!strncmp (nextname, "/SYM64/ ", 16)) + { + /* Irix 6 archive--must be recognized by code in elf64-mips.c. */ + bfd_set_error (bfd_error_wrong_format); + return false; + } + + bfd_has_map (abfd) = false; + return true; +} + +/* Returns false on error, true otherwise */ +/* flavor 2 of a bsd armap, similar to bfd_slurp_bsd_armap except the + header is in a slightly different order and the map name is '/'. + This flavour is used by hp300hpux. */ + +#define HPUX_SYMDEF_COUNT_SIZE 2 + +boolean +bfd_slurp_bsd_armap_f2 (abfd) + bfd *abfd; +{ + struct areltdata *mapdata; + char nextname[17]; + unsigned int counter; + bfd_byte *raw_armap, *rbase; + struct artdata *ardata = bfd_ardata (abfd); + char *stringbase; + unsigned int stringsize; + carsym *set; + int i = bfd_read ((PTR) nextname, 1, 16, abfd); + + if (i == 0) + return true; + if (i != 16) + return false; + + /* The archive has at least 16 bytes in it */ + if (bfd_seek (abfd, -16L, SEEK_CUR) != 0) + return false; + + if (!strncmp (nextname, "__.SYMDEF ", 16) + || !strncmp (nextname, "__.SYMDEF/ ", 16)) /* old Linux archives */ + return do_slurp_bsd_armap (abfd); + + if (strncmp (nextname, "/ ", 16)) + { + bfd_has_map (abfd) = false; + return true; + } + + mapdata = (struct areltdata *) _bfd_read_ar_hdr (abfd); + if (mapdata == NULL) + return false; + + raw_armap = (bfd_byte *) bfd_zalloc (abfd, mapdata->parsed_size); + if (raw_armap == NULL) + { + byebye: + bfd_release (abfd, (PTR) mapdata); + return false; + } + + if (bfd_read ((PTR) raw_armap, 1, mapdata->parsed_size, abfd) != + mapdata->parsed_size) + { + if (bfd_get_error () != bfd_error_system_call) + bfd_set_error (bfd_error_malformed_archive); + byebyebye: + bfd_release (abfd, (PTR) raw_armap); + goto byebye; + } + + ardata->symdef_count = bfd_h_get_16 (abfd, (PTR) raw_armap); + + if (ardata->symdef_count * BSD_SYMDEF_SIZE + > mapdata->parsed_size - HPUX_SYMDEF_COUNT_SIZE) + { + /* Probably we're using the wrong byte ordering. */ + bfd_set_error (bfd_error_wrong_format); + goto byebyebye; + } + + ardata->cache = 0; + + stringsize = bfd_h_get_32 (abfd, raw_armap + HPUX_SYMDEF_COUNT_SIZE); + /* skip sym count and string sz */ + stringbase = ((char *) raw_armap + + HPUX_SYMDEF_COUNT_SIZE + + BSD_STRING_COUNT_SIZE); + rbase = (bfd_byte *) stringbase + stringsize; + ardata->symdefs = (carsym *) bfd_alloc (abfd, + (ardata->symdef_count + * BSD_SYMDEF_SIZE)); + if (!ardata->symdefs) + return false; + + for (counter = 0, set = ardata->symdefs; + counter < ardata->symdef_count; + counter++, set++, rbase += BSD_SYMDEF_SIZE) + { + set->name = bfd_h_get_32 (abfd, rbase) + stringbase; + set->file_offset = bfd_h_get_32 (abfd, rbase + BSD_SYMDEF_OFFSET_SIZE); + } + + ardata->first_file_filepos = bfd_tell (abfd); + /* Pad to an even boundary if you have to */ + ardata->first_file_filepos += (ardata->first_file_filepos) % 2; + /* FIXME, we should provide some way to free raw_ardata when + we are done using the strings from it. For now, it seems + to be allocated on an objalloc anyway... */ + bfd_has_map (abfd) = true; + return true; +} + +/** Extended name table. + + Normally archives support only 14-character filenames. + + Intel has extended the format: longer names are stored in a special + element (the first in the archive, or second if there is an armap); + the name in the ar_hdr is replaced by <space><index into filename + element>. Index is the P.R. of an int (decimal). Data General have + extended the format by using the prefix // for the special element */ + +/* Returns false on error, true otherwise */ +boolean +_bfd_slurp_extended_name_table (abfd) + bfd *abfd; +{ + char nextname[17]; + struct areltdata *namedata; + + /* FIXME: Formatting sucks here, and in case of failure of BFD_READ, + we probably don't want to return true. */ + bfd_seek (abfd, bfd_ardata (abfd)->first_file_filepos, SEEK_SET); + if (bfd_read ((PTR) nextname, 1, 16, abfd) == 16) + { + if (bfd_seek (abfd, (file_ptr) - 16, SEEK_CUR) != 0) + return false; + + if (strncmp (nextname, "ARFILENAMES/ ", 16) != 0 && + strncmp (nextname, "// ", 16) != 0) + { + bfd_ardata (abfd)->extended_names = NULL; + return true; + } + + namedata = (struct areltdata *) _bfd_read_ar_hdr (abfd); + if (namedata == NULL) + return false; + + bfd_ardata (abfd)->extended_names = + bfd_zalloc (abfd, namedata->parsed_size); + if (bfd_ardata (abfd)->extended_names == NULL) + { + byebye: + bfd_release (abfd, (PTR) namedata); + return false; + } + + if (bfd_read ((PTR) bfd_ardata (abfd)->extended_names, 1, + namedata->parsed_size, abfd) != namedata->parsed_size) + { + if (bfd_get_error () != bfd_error_system_call) + bfd_set_error (bfd_error_malformed_archive); + bfd_release (abfd, (PTR) (bfd_ardata (abfd)->extended_names)); + bfd_ardata (abfd)->extended_names = NULL; + goto byebye; + } + + /* Since the archive is supposed to be printable if it contains + text, the entries in the list are newline-padded, not null + padded. In SVR4-style archives, the names also have a + trailing '/'. DOS/NT created archive often have \ in them + We'll fix all problems here.. */ + { + char *temp = bfd_ardata (abfd)->extended_names; + char *limit = temp + namedata->parsed_size; + for (; temp < limit; ++temp) { + if (*temp == '\012') + temp[temp[-1] == '/' ? -1 : 0] = '\0'; + if (*temp == '\\') + *temp = '/'; + } + } + + /* Pad to an even boundary if you have to */ + bfd_ardata (abfd)->first_file_filepos = bfd_tell (abfd); + bfd_ardata (abfd)->first_file_filepos += + (bfd_ardata (abfd)->first_file_filepos) % 2; + + /* FIXME, we can't release namedata here because it was allocated + below extended_names on the objalloc... */ + /* bfd_release (abfd, namedata); */ + } + return true; +} + +#ifdef VMS + +/* Return a copy of the stuff in the filename between any :]> and a + semicolon */ +static const char * +normalize (abfd, file) + bfd *abfd; + const char *file; +{ + CONST char *first; + CONST char *last; + char *copy; + + first = file + strlen (file) - 1; + last = first + 1; + + while (first != file) + { + if (*first == ';') + last = first; + if (*first == ':' || *first == ']' || *first == '>') + { + first++; + break; + } + first--; + } + + copy = (char *) bfd_alloc (abfd, last - first + 1); + if (copy == NULL) + return NULL; + + memcpy (copy, first, last - first); + copy[last - first] = 0; + + return copy; +} + +#else +static const char * +normalize (abfd, file) + bfd *abfd; + const char *file; +{ + const char *filename = strrchr (file, '/'); + + if (filename != (char *) NULL) + filename++; + else + filename = file; + return filename; +} +#endif + +/* Build a BFD style extended name table. */ + +boolean +_bfd_archive_bsd_construct_extended_name_table (abfd, tabloc, tablen, name) + bfd *abfd; + char **tabloc; + bfd_size_type *tablen; + const char **name; +{ + *name = "ARFILENAMES/"; + return _bfd_construct_extended_name_table (abfd, false, tabloc, tablen); +} + +/* Build an SVR4 style extended name table. */ + +boolean +_bfd_archive_coff_construct_extended_name_table (abfd, tabloc, tablen, name) + bfd *abfd; + char **tabloc; + bfd_size_type *tablen; + const char **name; +{ + *name = "//"; + return _bfd_construct_extended_name_table (abfd, true, tabloc, tablen); +} + +/* Follows archive_head and produces an extended name table if + necessary. Returns (in tabloc) a pointer to an extended name + table, and in tablen the length of the table. If it makes an entry + it clobbers the filename so that the element may be written without + further massage. Returns true if it ran successfully, false if + something went wrong. A successful return may still involve a + zero-length tablen! */ + +boolean +_bfd_construct_extended_name_table (abfd, trailing_slash, tabloc, tablen) + bfd *abfd; + boolean trailing_slash; + char **tabloc; + bfd_size_type *tablen; +{ + unsigned int maxname = abfd->xvec->ar_max_namelen; + unsigned int total_namelen = 0; + bfd *current; + char *strptr; + + *tablen = 0; + + /* Figure out how long the table should be */ + for (current = abfd->archive_head; current != NULL; current = current->next) + { + const char *normal; + unsigned int thislen; + + normal = normalize (current, current->filename); + if (normal == NULL) + return false; + + thislen = strlen (normal); + + if (thislen > maxname + && (bfd_get_file_flags (abfd) & BFD_TRADITIONAL_FORMAT) != 0) + thislen = maxname; + + if (thislen > maxname) + { + /* Add one to leave room for \n. */ + total_namelen += thislen + 1; + if (trailing_slash) + { + /* Leave room for trailing slash. */ + ++total_namelen; + } + } + else + { + struct ar_hdr *hdr = arch_hdr (current); + if (strncmp (normal, hdr->ar_name, thislen) != 0 + || (thislen < sizeof hdr->ar_name + && hdr->ar_name[thislen] != ar_padchar (current))) + { + /* Must have been using extended format even though it + didn't need to. Fix it to use normal format. */ + memcpy (hdr->ar_name, normal, thislen); + if (thislen < maxname + || (thislen == maxname && thislen < sizeof hdr->ar_name)) + hdr->ar_name[thislen] = ar_padchar (current); + } + } + } + + if (total_namelen == 0) + return true; + + *tabloc = bfd_zalloc (abfd, total_namelen); + if (*tabloc == NULL) + return false; + + *tablen = total_namelen; + strptr = *tabloc; + + for (current = abfd->archive_head; current != NULL; current = + current->next) + { + const char *normal; + unsigned int thislen; + + normal = normalize (current, current->filename); + if (normal == NULL) + return false; + + thislen = strlen (normal); + if (thislen > maxname) + { + /* Works for now; may need to be re-engineered if we + encounter an oddball archive format and want to + generalise this hack. */ + struct ar_hdr *hdr = arch_hdr (current); + strcpy (strptr, normal); + if (! trailing_slash) + strptr[thislen] = '\012'; + else + { + strptr[thislen] = '/'; + strptr[thislen + 1] = '\012'; + } + hdr->ar_name[0] = ar_padchar (current); + /* We know there will always be enough room (one of the few + cases where you may safely use sprintf). */ + sprintf ((hdr->ar_name) + 1, "%-d", (unsigned) (strptr - *tabloc)); + /* Kinda Kludgy. We should just use the returned value of + sprintf but not all implementations get this right */ + { + char *temp = hdr->ar_name + 2; + for (; temp < hdr->ar_name + maxname; temp++) + if (*temp == '\0') + *temp = ' '; + } + strptr += thislen + 1; + if (trailing_slash) + ++strptr; + } + } + + return true; +} + +/** A couple of functions for creating ar_hdrs */ + +/* Takes a filename, returns an arelt_data for it, or NULL if it can't + make one. The filename must refer to a filename in the filesystem. + The filename field of the ar_hdr will NOT be initialized. If member + is set, and it's an in-memory bfd, we fake it. */ + +static struct areltdata * +bfd_ar_hdr_from_filesystem (abfd, filename, member) + bfd *abfd; + const char *filename; + bfd *member; +{ + struct stat status; + struct areltdata *ared; + struct ar_hdr *hdr; + char *temp, *temp1; + + if (member && (member->flags & BFD_IN_MEMORY) != 0) + { + /* Assume we just "made" the member, and fake it */ + struct bfd_in_memory *bim = (struct bfd_in_memory *) member->iostream; + time(&status.st_mtime); + status.st_uid = getuid(); + status.st_gid = getgid(); + status.st_mode = 0644; + status.st_size = bim->size; + } + else if (stat (filename, &status) != 0) + { + bfd_set_error (bfd_error_system_call); + return NULL; + } + + ared = (struct areltdata *) bfd_zalloc (abfd, sizeof (struct ar_hdr) + + sizeof (struct areltdata)); + if (ared == NULL) + return NULL; + hdr = (struct ar_hdr *) (((char *) ared) + sizeof (struct areltdata)); + + /* ar headers are space padded, not null padded! */ + memset ((PTR) hdr, ' ', sizeof (struct ar_hdr)); + + strncpy (hdr->ar_fmag, ARFMAG, 2); + + /* Goddamned sprintf doesn't permit MAXIMUM field lengths */ + sprintf ((hdr->ar_date), "%-12ld", (long) status.st_mtime); + sprintf ((hdr->ar_uid), "%ld", (long) status.st_uid); + sprintf ((hdr->ar_gid), "%ld", (long) status.st_gid); + sprintf ((hdr->ar_mode), "%-8o", (unsigned int) status.st_mode); + sprintf ((hdr->ar_size), "%-10ld", (long) status.st_size); + /* Correct for a lossage in sprintf whereby it null-terminates. I cannot + understand how these C losers could design such a ramshackle bunch of + IO operations */ + temp = (char *) hdr; + temp1 = temp + sizeof (struct ar_hdr) - 2; + for (; temp < temp1; temp++) + { + if (*temp == '\0') + *temp = ' '; + } + strncpy (hdr->ar_fmag, ARFMAG, 2); + ared->parsed_size = status.st_size; + ared->arch_header = (char *) hdr; + + return ared; +} + +/* This is magic required by the "ar" program. Since it's + undocumented, it's undocumented. You may think that it would take + a strong stomach to write this, and it does, but it takes even a + stronger stomach to try to code around such a thing! */ + +struct ar_hdr *bfd_special_undocumented_glue PARAMS ((bfd *, const char *)); + +struct ar_hdr * +bfd_special_undocumented_glue (abfd, filename) + bfd *abfd; + const char *filename; +{ + struct areltdata *ar_elt = bfd_ar_hdr_from_filesystem (abfd, filename, 0); + if (ar_elt == NULL) + return NULL; + return (struct ar_hdr *) ar_elt->arch_header; +} + + +/* Analogous to stat call */ +int +bfd_generic_stat_arch_elt (abfd, buf) + bfd *abfd; + struct stat *buf; +{ + struct ar_hdr *hdr; + char *aloser; + + if (abfd->arelt_data == NULL) + { + bfd_set_error (bfd_error_invalid_operation); + return -1; + } + + hdr = arch_hdr (abfd); + +#define foo(arelt, stelt, size) \ + buf->stelt = strtol (hdr->arelt, &aloser, size); \ + if (aloser == hdr->arelt) return -1; + + foo (ar_date, st_mtime, 10); + foo (ar_uid, st_uid, 10); + foo (ar_gid, st_gid, 10); + foo (ar_mode, st_mode, 8); + + buf->st_size = arch_eltdata (abfd)->parsed_size; + + return 0; +} + +void +bfd_dont_truncate_arname (abfd, pathname, arhdr) + bfd *abfd; + CONST char *pathname; + char *arhdr; +{ + /* FIXME: This interacts unpleasantly with ar's quick-append option. + Fortunately ic960 users will never use that option. Fixing this + is very hard; fortunately I know how to do it and will do so once + intel's release is out the door. */ + + struct ar_hdr *hdr = (struct ar_hdr *) arhdr; + size_t length; + const char *filename; + size_t maxlen = ar_maxnamelen (abfd); + + if ((bfd_get_file_flags (abfd) & BFD_TRADITIONAL_FORMAT) != 0) + { + bfd_bsd_truncate_arname (abfd, pathname, arhdr); + return; + } + + filename = normalize (abfd, pathname); + if (filename == NULL) + { + /* FIXME */ + abort (); + } + + length = strlen (filename); + + if (length <= maxlen) + memcpy (hdr->ar_name, filename, length); + + /* Add the padding character if there is room for it. */ + if (length < maxlen + || (length == maxlen && length < sizeof hdr->ar_name)) + (hdr->ar_name)[length] = ar_padchar (abfd); +} + +void +bfd_bsd_truncate_arname (abfd, pathname, arhdr) + bfd *abfd; + CONST char *pathname; + char *arhdr; +{ + struct ar_hdr *hdr = (struct ar_hdr *) arhdr; + int length; + CONST char *filename = strrchr (pathname, '/'); + int maxlen = ar_maxnamelen (abfd); + + if (filename == NULL) + filename = pathname; + else + ++filename; + + length = strlen (filename); + + if (length <= maxlen) + memcpy (hdr->ar_name, filename, length); + else + { + /* pathname: meet procrustes */ + memcpy (hdr->ar_name, filename, maxlen); + length = maxlen; + } + + if (length < maxlen) + (hdr->ar_name)[length] = ar_padchar (abfd); +} + +/* Store name into ar header. Truncates the name to fit. + 1> strip pathname to be just the basename. + 2> if it's short enuf to fit, stuff it in. + 3> If it doesn't end with .o, truncate it to fit + 4> truncate it before the .o, append .o, stuff THAT in. */ + +/* This is what gnu ar does. It's better but incompatible with the + bsd ar. */ + +void +bfd_gnu_truncate_arname (abfd, pathname, arhdr) + bfd *abfd; + CONST char *pathname; + char *arhdr; +{ + struct ar_hdr *hdr = (struct ar_hdr *) arhdr; + int length; + CONST char *filename = strrchr (pathname, '/'); + int maxlen = ar_maxnamelen (abfd); + + if (filename == NULL) + filename = pathname; + else + ++filename; + + length = strlen (filename); + + if (length <= maxlen) + memcpy (hdr->ar_name, filename, length); + else + { /* pathname: meet procrustes */ + memcpy (hdr->ar_name, filename, maxlen); + if ((filename[length - 2] == '.') && (filename[length - 1] == 'o')) + { + hdr->ar_name[maxlen - 2] = '.'; + hdr->ar_name[maxlen - 1] = 'o'; + } + length = maxlen; + } + + if (length < 16) + (hdr->ar_name)[length] = ar_padchar (abfd); +} + +/* The BFD is open for write and has its format set to bfd_archive */ + +boolean +_bfd_write_archive_contents (arch) + bfd *arch; +{ + bfd *current; + char *etable = NULL; + bfd_size_type elength = 0; + const char *ename = NULL; + boolean makemap = bfd_has_map (arch); + boolean hasobjects = false; /* if no .o's, don't bother to make a map */ + bfd_size_type wrote; + unsigned int i; + int tries; + + /* Verify the viability of all entries; if any of them live in the + filesystem (as opposed to living in an archive open for input) + then construct a fresh ar_hdr for them. */ + for (current = arch->archive_head; current; current = current->next) + { + if (bfd_write_p (current)) + { + bfd_set_error (bfd_error_invalid_operation); + return false; + } + if (!current->arelt_data) + { + current->arelt_data = + (PTR) bfd_ar_hdr_from_filesystem (arch, current->filename, current); + if (!current->arelt_data) + return false; + + /* Put in the file name */ + BFD_SEND (arch, _bfd_truncate_arname, (arch, + current->filename, + (char *) arch_hdr (current))); + } + + if (makemap && ! hasobjects) + { /* don't bother if we won't make a map! */ + if ((bfd_check_format (current, bfd_object)) +#if 0 /* FIXME -- these are not set correctly */ + && ((bfd_get_file_flags (current) & HAS_SYMS)) +#endif + ) + hasobjects = true; + } + } + + if (!BFD_SEND (arch, _bfd_construct_extended_name_table, + (arch, &etable, &elength, &ename))) + return false; + + if (bfd_seek (arch, (file_ptr) 0, SEEK_SET) != 0) + return false; +#ifdef GNU960 + wrote = bfd_write (BFD_GNU960_ARMAG (arch), 1, SARMAG, arch); +#else + wrote = bfd_write (ARMAG, 1, SARMAG, arch); +#endif + if (wrote != SARMAG) + return false; + + if (makemap && hasobjects) + { + if (_bfd_compute_and_write_armap (arch, elength) != true) + return false; + } + + if (elength != 0) + { + struct ar_hdr hdr; + + memset ((char *) (&hdr), 0, sizeof (struct ar_hdr)); + strcpy (hdr.ar_name, ename); + /* Round size up to even number in archive header. */ + sprintf (&(hdr.ar_size[0]), "%-10d", + (int) ((elength + 1) & ~1)); + strncpy (hdr.ar_fmag, ARFMAG, 2); + for (i = 0; i < sizeof (struct ar_hdr); i++) + if (((char *) (&hdr))[i] == '\0') + (((char *) (&hdr))[i]) = ' '; + if ((bfd_write ((char *) &hdr, 1, sizeof (struct ar_hdr), arch) + != sizeof (struct ar_hdr)) + || bfd_write (etable, 1, elength, arch) != elength) + return false; + if ((elength % 2) == 1) + { + if (bfd_write ("\012", 1, 1, arch) != 1) + return false; + } + } + + for (current = arch->archive_head; current; current = current->next) + { + char buffer[DEFAULT_BUFFERSIZE]; + unsigned int remaining = arelt_size (current); + struct ar_hdr *hdr = arch_hdr (current); + + /* write ar header */ + if (bfd_write ((char *) hdr, 1, sizeof (*hdr), arch) != sizeof (*hdr)) + return false; + if (bfd_seek (current, (file_ptr) 0, SEEK_SET) != 0) + return false; + while (remaining) + { + unsigned int amt = DEFAULT_BUFFERSIZE; + if (amt > remaining) + amt = remaining; + errno = 0; + if (bfd_read (buffer, amt, 1, current) != amt) + { + if (bfd_get_error () != bfd_error_system_call) + bfd_set_error (bfd_error_malformed_archive); + return false; + } + if (bfd_write (buffer, amt, 1, arch) != amt) + return false; + remaining -= amt; + } + if ((arelt_size (current) % 2) == 1) + { + if (bfd_write ("\012", 1, 1, arch) != 1) + return false; + } + } + + if (makemap && hasobjects) + { + /* Verify the timestamp in the archive file. If it would not be + accepted by the linker, rewrite it until it would be. If + anything odd happens, break out and just return. (The + Berkeley linker checks the timestamp and refuses to read the + table-of-contents if it is >60 seconds less than the file's + modified-time. That painful hack requires this painful hack. */ + tries = 1; + do + { + if (bfd_update_armap_timestamp (arch)) + break; + (*_bfd_error_handler) + (_("Warning: writing archive was slow: rewriting timestamp\n")); + } + while (++tries < 6); + } + + return true; +} + +/* Note that the namidx for the first symbol is 0 */ + +boolean +_bfd_compute_and_write_armap (arch, elength) + bfd *arch; + unsigned int elength; +{ + char *first_name = NULL; + bfd *current; + file_ptr elt_no = 0; + struct orl *map = NULL; + int orl_max = 1024; /* fine initial default */ + int orl_count = 0; + int stridx = 0; /* string index */ + asymbol **syms = NULL; + long syms_max = 0; + boolean ret; + + /* Dunno if this is the best place for this info... */ + if (elength != 0) + elength += sizeof (struct ar_hdr); + elength += elength % 2; + + map = (struct orl *) bfd_malloc (orl_max * sizeof (struct orl)); + if (map == NULL) + goto error_return; + + /* We put the symbol names on the arch objalloc, and then discard + them when done. */ + first_name = bfd_alloc (arch, 1); + if (first_name == NULL) + goto error_return; + + /* Drop all the files called __.SYMDEF, we're going to make our + own */ + while (arch->archive_head && + strcmp (arch->archive_head->filename, "__.SYMDEF") == 0) + arch->archive_head = arch->archive_head->next; + + /* Map over each element */ + for (current = arch->archive_head; + current != (bfd *) NULL; + current = current->next, elt_no++) + { + if ((bfd_check_format (current, bfd_object) == true) + && ((bfd_get_file_flags (current) & HAS_SYMS))) + { + long storage; + long symcount; + long src_count; + + storage = bfd_get_symtab_upper_bound (current); + if (storage < 0) + goto error_return; + + if (storage != 0) + { + if (storage > syms_max) + { + if (syms_max > 0) + free (syms); + syms_max = storage; + syms = (asymbol **) bfd_malloc ((size_t) syms_max); + if (syms == NULL) + goto error_return; + } + symcount = bfd_canonicalize_symtab (current, syms); + if (symcount < 0) + goto error_return; + + /* Now map over all the symbols, picking out the ones we want */ + for (src_count = 0; src_count < symcount; src_count++) + { + flagword flags = (syms[src_count])->flags; + asection *sec = syms[src_count]->section; + + if ((flags & BSF_GLOBAL || + flags & BSF_WEAK || + flags & BSF_INDIRECT || + bfd_is_com_section (sec)) + && ! bfd_is_und_section (sec)) + { + size_t namelen; + struct orl *new_map; + + /* This symbol will go into the archive header */ + if (orl_count == orl_max) + { + orl_max *= 2; + new_map = + ((struct orl *) + bfd_realloc (map, orl_max * sizeof (struct orl))); + if (new_map == (struct orl *) NULL) + goto error_return; + + map = new_map; + } + + namelen = strlen (syms[src_count]->name); + map[orl_count].name = ((char **) + bfd_alloc (arch, + sizeof (char *))); + if (map[orl_count].name == NULL) + goto error_return; + *(map[orl_count].name) = bfd_alloc (arch, namelen + 1); + if (*(map[orl_count].name) == NULL) + goto error_return; + strcpy (*(map[orl_count].name), syms[src_count]->name); + (map[orl_count]).pos = (file_ptr) current; + (map[orl_count]).namidx = stridx; + + stridx += namelen + 1; + ++orl_count; + } + } + } + + /* Now ask the BFD to free up any cached information, so we + don't fill all of memory with symbol tables. */ + if (! bfd_free_cached_info (current)) + goto error_return; + } + } + + /* OK, now we have collected all the data, let's write them out */ + ret = BFD_SEND (arch, write_armap, + (arch, elength, map, orl_count, stridx)); + + if (syms_max > 0) + free (syms); + if (map != NULL) + free (map); + if (first_name != NULL) + bfd_release (arch, first_name); + + return ret; + + error_return: + if (syms_max > 0) + free (syms); + if (map != NULL) + free (map); + if (first_name != NULL) + bfd_release (arch, first_name); + + return false; +} + +boolean +bsd_write_armap (arch, elength, map, orl_count, stridx) + bfd *arch; + unsigned int elength; + struct orl *map; + unsigned int orl_count; + int stridx; +{ + int padit = stridx & 1; + unsigned int ranlibsize = orl_count * BSD_SYMDEF_SIZE; + unsigned int stringsize = stridx + padit; + /* Include 8 bytes to store ranlibsize and stringsize in output. */ + unsigned int mapsize = ranlibsize + stringsize + 8; + file_ptr firstreal; + bfd *current = arch->archive_head; + bfd *last_elt = current; /* last element arch seen */ + bfd_byte temp[4]; + unsigned int count; + struct ar_hdr hdr; + struct stat statbuf; + unsigned int i; + + firstreal = mapsize + elength + sizeof (struct ar_hdr) + SARMAG; + + stat (arch->filename, &statbuf); + memset ((char *) (&hdr), 0, sizeof (struct ar_hdr)); + sprintf (hdr.ar_name, RANLIBMAG); + /* Remember the timestamp, to keep it holy. But fudge it a little. */ + bfd_ardata (arch)->armap_timestamp = statbuf.st_mtime + ARMAP_TIME_OFFSET; + bfd_ardata (arch)->armap_datepos = (SARMAG + + offsetof (struct ar_hdr, ar_date[0])); + sprintf (hdr.ar_date, "%ld", bfd_ardata (arch)->armap_timestamp); +#ifndef _WIN32 + sprintf (hdr.ar_uid, "%ld", (long) getuid ()); + sprintf (hdr.ar_gid, "%ld", (long) getgid ()); +#else + sprintf (hdr.ar_uid, "%ld", (long) 666); + sprintf (hdr.ar_gid, "%ld", (long) 42); +#endif + sprintf (hdr.ar_size, "%-10d", (int) mapsize); + strncpy (hdr.ar_fmag, ARFMAG, 2); + for (i = 0; i < sizeof (struct ar_hdr); i++) + if (((char *) (&hdr))[i] == '\0') + (((char *) (&hdr))[i]) = ' '; + if (bfd_write ((char *) &hdr, 1, sizeof (struct ar_hdr), arch) + != sizeof (struct ar_hdr)) + return false; + bfd_h_put_32 (arch, (bfd_vma) ranlibsize, temp); + if (bfd_write (temp, 1, sizeof (temp), arch) != sizeof (temp)) + return false; + + for (count = 0; count < orl_count; count++) + { + bfd_byte buf[BSD_SYMDEF_SIZE]; + + if (((bfd *) (map[count]).pos) != last_elt) + { + do + { + firstreal += arelt_size (current) + sizeof (struct ar_hdr); + firstreal += firstreal % 2; + current = current->next; + } + while (current != (bfd *) (map[count]).pos); + } /* if new archive element */ + + last_elt = current; + bfd_h_put_32 (arch, map[count].namidx, buf); + bfd_h_put_32 (arch, firstreal, buf + BSD_SYMDEF_OFFSET_SIZE); + if (bfd_write (buf, BSD_SYMDEF_SIZE, 1, arch) != BSD_SYMDEF_SIZE) + return false; + } + + /* now write the strings themselves */ + bfd_h_put_32 (arch, stringsize, temp); + if (bfd_write (temp, 1, sizeof (temp), arch) != sizeof (temp)) + return false; + for (count = 0; count < orl_count; count++) + { + size_t len = strlen (*map[count].name) + 1; + + if (bfd_write (*map[count].name, 1, len, arch) != len) + return false; + } + + /* The spec sez this should be a newline. But in order to be + bug-compatible for sun's ar we use a null. */ + if (padit) + { + if (bfd_write ("", 1, 1, arch) != 1) + return false; + } + + return true; +} + +/* At the end of archive file handling, update the timestamp in the + file, so the linker will accept it. + + Return true if the timestamp was OK, or an unusual problem happened. + Return false if we updated the timestamp. */ + +boolean +_bfd_archive_bsd_update_armap_timestamp (arch) + bfd *arch; +{ + struct stat archstat; + struct ar_hdr hdr; + unsigned int i; + + /* Flush writes, get last-write timestamp from file, and compare it + to the timestamp IN the file. */ + bfd_flush (arch); + if (bfd_stat (arch, &archstat) == -1) + { + perror (_("Reading archive file mod timestamp")); + return true; /* Can't read mod time for some reason */ + } + if (archstat.st_mtime <= bfd_ardata (arch)->armap_timestamp) + return true; /* OK by the linker's rules */ + + /* Update the timestamp. */ + bfd_ardata (arch)->armap_timestamp = archstat.st_mtime + ARMAP_TIME_OFFSET; + + /* Prepare an ASCII version suitable for writing. */ + memset (hdr.ar_date, 0, sizeof (hdr.ar_date)); + sprintf (hdr.ar_date, "%ld", bfd_ardata (arch)->armap_timestamp); + for (i = 0; i < sizeof (hdr.ar_date); i++) + if (hdr.ar_date[i] == '\0') + (hdr.ar_date)[i] = ' '; + + /* Write it into the file. */ + bfd_ardata (arch)->armap_datepos = (SARMAG + + offsetof (struct ar_hdr, ar_date[0])); + if (bfd_seek (arch, bfd_ardata (arch)->armap_datepos, SEEK_SET) != 0 + || (bfd_write (hdr.ar_date, sizeof (hdr.ar_date), 1, arch) + != sizeof (hdr.ar_date))) + { + /* FIXME: bfd can't call perror. */ + perror (_("Writing updated armap timestamp")); + return true; /* Some error while writing */ + } + + return false; /* We updated the timestamp successfully. */ +} + +/* A coff armap looks like : + lARMAG + struct ar_hdr with name = '/' + number of symbols + offset of file for symbol 0 + offset of file for symbol 1 + + offset of file for symbol n-1 + symbol name 0 + symbol name 1 + + symbol name n-1 +*/ + +boolean +coff_write_armap (arch, elength, map, symbol_count, stridx) + bfd *arch; + unsigned int elength; + struct orl *map; + unsigned int symbol_count; + int stridx; +{ + /* The size of the ranlib is the number of exported symbols in the + archive * the number of bytes in a int, + an int for the count */ + unsigned int ranlibsize = (symbol_count * 4) + 4; + unsigned int stringsize = stridx; + unsigned int mapsize = stringsize + ranlibsize; + file_ptr archive_member_file_ptr; + bfd *current = arch->archive_head; + unsigned int count; + struct ar_hdr hdr; + unsigned int i; + int padit = mapsize & 1; + + if (padit) + mapsize++; + + /* work out where the first object file will go in the archive */ + archive_member_file_ptr = (mapsize + + elength + + sizeof (struct ar_hdr) + + SARMAG); + + memset ((char *) (&hdr), 0, sizeof (struct ar_hdr)); + hdr.ar_name[0] = '/'; + sprintf (hdr.ar_size, "%-10d", (int) mapsize); + sprintf (hdr.ar_date, "%ld", (long) time (NULL)); + /* This, at least, is what Intel coff sets the values to.: */ + sprintf ((hdr.ar_uid), "%d", 0); + sprintf ((hdr.ar_gid), "%d", 0); + sprintf ((hdr.ar_mode), "%-7o", (unsigned) 0); + strncpy (hdr.ar_fmag, ARFMAG, 2); + + for (i = 0; i < sizeof (struct ar_hdr); i++) + if (((char *) (&hdr))[i] == '\0') + (((char *) (&hdr))[i]) = ' '; + + /* Write the ar header for this item and the number of symbols */ + + if (bfd_write ((PTR) &hdr, 1, sizeof (struct ar_hdr), arch) + != sizeof (struct ar_hdr)) + return false; + + bfd_write_bigendian_4byte_int (arch, symbol_count); + + /* Two passes, first write the file offsets for each symbol - + remembering that each offset is on a two byte boundary. */ + + /* Write out the file offset for the file associated with each + symbol, and remember to keep the offsets padded out. */ + + current = arch->archive_head; + count = 0; + while (current != (bfd *) NULL && count < symbol_count) + { + /* For each symbol which is used defined in this object, write out + the object file's address in the archive */ + + while (((bfd *) (map[count]).pos) == current) + { + bfd_write_bigendian_4byte_int (arch, archive_member_file_ptr); + count++; + } + /* Add size of this archive entry */ + archive_member_file_ptr += (arelt_size (current) + + sizeof (struct ar_hdr)); + /* remember aboout the even alignment */ + archive_member_file_ptr += archive_member_file_ptr % 2; + current = current->next; + } + + /* now write the strings themselves */ + for (count = 0; count < symbol_count; count++) + { + size_t len = strlen (*map[count].name) + 1; + + if (bfd_write (*map[count].name, 1, len, arch) != len) + return false; + } + + /* The spec sez this should be a newline. But in order to be + bug-compatible for arc960 we use a null. */ + if (padit) + { + if (bfd_write ("", 1, 1, arch) != 1) + return false; + } + + return true; +} |